Prtg !exclusive! Freeware Limitations
While "100 sensors" sounds like a generous allowance to the uninitiated, seasoned network engineers know that this number evaporates almost instantly. This is the single biggest point of friction in the freeware experience.
Paessler allows the freeware version to be used in commercial environments. However, organizations must not manipulate the system to bypass the sensor limit. Technical Support Limitations Freeware users do not receive priority technical support. No phone support is available. Ticket responses are not guaranteed. Support relies heavily on the Paessler Knowledge Base. Users must troubleshoot via community forums. Impact on Advanced Features
Another hidden limitation is that the freeware license is tied to the physical server (or the MAC address of the host). You cannot install PRTG Freeware on two different servers to get 200 sensors. If you want to scale out, you have to pay. prtg freeware limitations
Suddenly, a single standard server consumes 6 sensors. Add a switch with traffic sensors for 24 ports, and you’ve used nearly a third of your entire allotment. In a production environment, you will hit the 100-sensor wall within the first hour of setup. This forces you into a difficult position: do you monitor fewer devices, or do you monitor fewer metrics per device?
| Feature | PRTG Free (100 sensors) | PRTG Paid License | | :--- | :--- | :--- | | | ❌ Not available | ✅ Supported (Failover, Load Balancing) | | Distributed Probes | ❌ Limited to 1 remote probe | ✅ Unlimited remote probes | | User Accounts & Access Rights | ✅ Basic (Admin + read-only) | ✅ Advanced (Multi-user, LDAP/AD integration) | | Maps & Dashboards | ✅ Limited to 5 maps | ✅ Unlimited maps | | Report Generation (PDF) | ✅ Limited to 3 scheduled reports | ✅ Unlimited reports | | Alerting (Push, Email, SMS) | ✅ Full features | ✅ Full features | | Monitoring of unlimited devices | ❌ Max 100 sensors total | ✅ Unlimited sensors (by license tier) | While "100 sensors" sounds like a generous allowance
PRTG is not "feature-crippled" in the traditional sense. Unlike other freeware that might block advanced features (like mapping, clustering, or historical reporting), PRTG gives you the full enterprise feature set for free.
PRTG Network Monitor: Analysis of Freeware Edition Limitations However, organizations must not manipulate the system to
Because a typical device requires 5–10 sensors for comprehensive health tracking, the free version is generally suitable for only 10–20 devices .
The freeware license is restricted to a single installation core. You cannot combine multiple freeware licenses across different servers to monitor a larger network from a single dashboard. Commercial Use Policy
Packet sniffing sensors look at high-volume data types but count heavily toward your 100-sensor cap.
The PRTG Network Monitor Freeware Edition is a professional-grade monitoring solution offered by Paessler that provides the core functionalities of the paid software at no cost. While it is highly capable, several key limitations restrict its use in enterprise-scale environments. 1. Hard Sensor Limit The primary restriction is the .